| Name | Meaning | Gender | Origin |
|---|
| Slash | | Unisex | Hebrew |
| Socrates | Uncertain meaning | Male | Greek |
| Sonic | Approaching the speed of sound, fast-paced | Unisex | English |
| Sparrow | A bird | Female | English |
| Sphinx | | Unisex | Hebrew |
| Spider | An eight legged insect | Unisex | English |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Unisex | English |
| Stormy | Violent weather | Unisex | English |
| Styx | Myth Name (A River Of The Underworld) | Unisex | English |
| Suki | To like | Female | Japanese |
| Syther | | Unisex | Hebrew |
| Taboo | | Unisex | Hebrew |
| Talon | A claw | Male | English |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Tempest | Storm | Female | English |
| Tequila | An alcoholic liquor distilled from mescal. | Unisex | English |
| Thistle | Thistle | Female | English |
| Thora | Thunder | Female | Norse |
| Titan | Powerful big man | Unisex | Greek |
| Titus | Of The Giants | Male | Latin |
| Trace | Thracius' place | Unisex | English |
| Tracker | A tracking system designed for the recovery of stolen vehicles | Both | English |
| Treasure | Precious possession | Unisex | English |
| Trigger | | Unisex | Hebrew |
| Trojan | | Unisex | Hebrew |
| Trouble | A cause of disturbance or difficulty. | Unisex | English |
| Troy | Troyes | Female | French |
| Twister | A cyclone or tornado. | Unisex | English |
| Ultima | Aloof | Female | Latin |
| Ursula | Little bear | Female | Latin |